* call.c (build_over_call): Check unsafe_copy_elision_p even for
trivial constructors.
* method.c (do_build_copy_constructor): Don't copy tail padding
even in a trivial constructor.
From-SVN: r238620
The compiler check that issued a duplicate declaration error for
a, a, a := 1, 2, 3
was incorrectly issuing an error for
a, a, a = 1, 2, 3
While this is not particularly useful, it is valid Go.
Test is https://golang.org/cl/25143.
Reviewed-on: https://go-review.googlesource.com/25144
From-SVN: r238618
* testsuite/21_strings/basic_string/modifiers/append/char/1.cc: Fix
reads past the end of strings.
* testsuite/21_strings/basic_string/operations/compare/char/1.cc:
Likewise.
* testsuite/21_strings/char_traits/requirements/short/1.cc: Fix
invalid array accesses.
* testsuite/experimental/string_view/operations/compare/char/1.cc:
Fix read past the end of string.
* testsuite/util/testsuite_character.cc: Fix out-of-bounds write.
From-SVN: r238609
PR middle-end/71876
* builtin-attrs.def (ATTR_RT_NOTHROW_LEAF_LIST): New return twice
attribute.
* builtins.def (BUILT_IN_SETJMP): Use ATTR_RT_NOTHROW_LEAF_LIST here.
* calls.c (special_function_p): Remove the special handling of the
"__builtin_" prefix.
From-SVN: r238606
PR middle-end/71876
* calls.c (gimple_maybe_alloca_call_p): New function. Return true
if STMT may be an alloca call.
(gimple_alloca_call_p, alloca_call_p): Return only true for the
builtin alloca call.
* calls.h (gimple_maybe_alloca_call_p): New function.
* tree-inline.c (inline_forbidden_p_stmt): Use
gimple_maybe_alloca_call_p here.
From-SVN: r238605
gcc/ChangeLog:
* spellcheck-tree.c (best_macro_match::best_macro_match):
Explictly specify the template arguments when invoking the base
class constructor, to help older C++ compilers.
From-SVN: r238598
gcc/
* ifcvt.c (noce_if_info): New fields: speed_p, original_cost,
max_seq_cost. Removed fields: then_cost, else_cost, branch_cost.
(noce_conversion_profitable_p): New.
(noce_try_store_flag_constants): Use it.
(noce_try_addcc): Likewise.
(noce_try_store_flag_mask): Likewise.
(noce_try_cmove): Likewise.
(noce_try_cmove_arith): Likewise.
(bb_valid_for_noce_process_p): Add to the cost parameter rather than
overwriting it.
(noce_convert_multiple_sets): Move cost model to here, from...
(bb_ok_for_noce_convert_multiple_sets) ...here.
(noce_process_if_block): Update calls for above changes.
(noce_find_if_block): Record new noce_if_info parameters.
gcc/testsuite/
* gcc.dg/ifcvt-2.c: Use parameter to guide if-conversion heuristics.
* gcc.dg/ifcvt-3.c: Use parameter to guide if-conversion heuristics.
* gcc.dg/pr68435.c: Use parameter to guide if-conversion heuristics.
* gcc.dg/ifcvt-4.c: Use parameter to guide if-conversion heuristics.
* gcc.dg/ifcvt-5.c: Use parameter to guide if-conversion heuristics.
From-SVN: r238594
For Aurelien Jarno <aurelien@aurel32.net>
On ARM soft-float, the float to double conversion doesn't convert a sNaN
to qNaN as the IEEE Std 754 standard mandates:
"Under default exception handling, any operation signaling an invalid
operation exception and for which a floating-point result is to be
delivered shall deliver a quiet NaN."
Given the soft float ARM code ignores exceptions and always provides a
result, a float to double conversion of a signaling NaN should return a
quiet NaN. Fix this in extendsfdf2.
gcc/ChangeLog:
PR target/59833
* config/arm/ieee754-df.S (extendsfdf2): Convert sNaN to qNaN.
gcc/testsuite/ChangeLog:
* gcc.dg/pr59833.c: New testcase.
From-SVN: r238584
gcc/c-family/
* c-common.c (c_common_truthvalue_conversion): Check
c_inhibit_evaluation_warnings for warning about address of
reference.
gcc/cp/
* typeck.c (cp_truthvalue_conversion): Compare pointers to nullptr.
Don't set c_inhibit_evaluation_warnings.
From-SVN: r238560
PR c++/67565
PR c++/67579
PR c++/71843
gcc/
* timevar.def (TV_CONSTRAINT_SAT, TV_CONSTRAINT_SUB): New time vars
for constraint satisfaction and subsumption.
* timevar.h (auto_timevar): New constructor that matches the push/pop
pattern of usage in pt.c.
gcc/cp/
* cp-tree.def (CHECK_CONSTR): New.
* cp-tree.h (CHECK_CONSTR_CONCEPT): New.
(CHECK_CONSTR_ARGS): New.
* constraint.cc (make_predicate_constraint): Remove in favor of
normalize_expression.
(resolve_constraint_check): Actually return error_mark_node when
resolution fails.
(resolve_variable_concept_check): Perform coercion as if processing
a template. Also return errors on resolution failure.
(lift_*): Remove all of these functions. Don't unnecessarily inline
concepts.
(learn_*): Add facilities to memoize implications for subsumption
during normalization.
(expanding_concept): New.
(expand_concept): New. Return the inlined and normalized definition
of a concept when needed.
(transform_*, xform_*): Rename to normalize_* to better reflect the
responsibility of those functions.
(normalize_template_id_expression): Check for non-boolean operands
when possible. Generate check constraints instead of normal variable
references.
(normalize_call_expression): Report errors when resolution fails.
(check_for_logical_overloads): Rewrite this check to more accurately
report the error.
(normalize_atom): Check for overloaded calls and invalid types before
determining if the expression refers to a concept.
(build_constraints): Don't cache normalized constraints or decmposed
assumptions.
(finish_shorthand_constraint): Return a normalized expression instead
of a predicate constraint.
(finish_template_introduction): Same.
(placeholder_extract_concept_and_args): Rewrite this since we only
ever get check constraints here.
(equivalent_placeholder_constraints): Rewrite in terms of check
constraints, and handle error_mark_nodes correctly.
(tsubst_check_constraint, tsubst_expr_constr, tsubst_type_constr)
(tsubst_implicit_conversion_constr)
(tsubst_argument_deduction_constr, tsubst_exception_constr)
(tsubst_parameterized_constraint, tsubst_constraint): New.
(tsbust_conjunection): Replace with tsubst_logical_operator and
actually generate the right kind of constraint.
(tsubst_requirement_body): Reverse the order of substituted arguments
so that they appear in the order written (helps diagnostics).
(satisfy_check_constraint): New.
(satisfy_conjunction): Simplify.
(satisfy_disjunction): Same.
(satisfy_constraint_1): Handle check constraints.
(eval_constr): New (private) global state.
(evaluating_constraints_sentinel): New. Manages eval_constr.
(satisfy_constraint): Add timing variables.
(satisfy_associated_constraints): Add hooks for memoization.
(evaluate_function_concept): Build a check constraint instead of
normalizing its definition.
(evaluate_variable_concept): Same.
(evaluate_constraint_expression): Normalize, but in the current
declaration processing context.
(evaluating_constraints_p): New.
(elide_constraint_failure_p): Actually emit constraint_thresh errors.
(diagnose_*): Remove artificial indentation. Add a new parameter to
each that tracks the current (complete) constraint prior to any
substitutions.
(diagnose_expression): Removed.
(diagnose_call_expression): Same.
(diagnose_template_id): Same.
(diagnose_template_id): New.
(diagnose_logical_constraint): New.
(diagnose_expression_constraint): Show the original expression.
(diagnose_type_constraint): Show the original type.
(diagnose_implicit_conversion_constraint): Be specific about
failures, don't re-diagnose a known-to-be-failed substitutions,
and manage elisions properly.
(diagnose_argument_deduction_constraint): Same.
(diagnose_exception_constraint): Same.
(diagnose_parameterized_constraint): Same.
(constraint_p): Allow EXPR_PACK_EXPANSION.
* logic.cc (next_by_distance): Removed. No longer used.
(any_p): Renamed from any_of.
(term_entry, term_hasher): New.
(term_list): Rewrite to include a hash table for quick lookup.
Also, make less stateful.
(proof_state): Extend to allow goals to be discharged once
satisfied.
(non_atomic_constraint_p): New.
(any_non_atomic_constraints_p): New.
(...rest...): Previous implementation completely replaced with an
iterative algorithm that opportunistically prunes the search space
before committing to using more memory.
* parser.c: (cp_parser_type_parameter): Normalize constraints.
(cp_parser_explicit_template_declaration): Same.
* pt.c: (finish_template_variable): Be less redundant with this error
message.
(template_args_equal): No longer static.
(tsubst_decl): Don't try to find specializations of variables that
have already been instantiated.
(build_non_dependent_expr): Avoid infinite recursion during concept
expansion.
(make_constrained_auto): Normalize constraints.
(do_auto_deduction): When doing auto deduction from a
partial-concept-id, be sure to include the explicit args checking
the constraints.
(constraint_sat_*): New. Memoize satisfied constraints.
(concept_spec_*): New. Memoize expressions associated with a concept
specialization.
(constraint_memos, concept_memos): New.
(lookup_constraint_satisfaction, memoize_constraint_satisfaction): New.
(lookup_concept_satisfaction, memoize_concept_satisfaction): New.
(get_concept_expansion, save_concept_expansion): New.
(hash_subsumption_args): New.
(comp_subsumption_args): New.
(subsumption_*): New. Memoize parts of the subsumption relation.
(lookup_subsumption_result, save_subsumption_result): New.
(init_constraint_processing): Initialize memo tables.
(get_constraints): Shortcut if !flag_concepts.
* decl.c (grokfndecl): Normalize constraints.
* error.c (dump_simple_decl): Print "concept" when appropriate.
(dump_function_decl): Same.
(dump_template_decl): Don't write requirements when we're not
printing the header.
(dump_expr): Handle fold expressions.
* cxx-pretty-print.c (cxx_pretty_printer::expression): Handle
fold expressions.
(get_fold_operator): New.
(pp_cxx_unary_left_fold_expression): New.
(pp_cxx_unary_right_fold_expression): New.
(pp_cxx_binary_fold_expression): New.
(pp_cxx_check_constraint): New.
(pp_cxx_*_constraint): Rewrite the grammar of internal constraints
to make them easier to read when debugging.
* search.c (accessible_p): Don't shortcut when evaluating constraints.
* tree.c (cp_tree_equal): Handle CHECK_CONSTR.
Co-Authored-By: Jason Merrill <jason@redhat.com>
From-SVN: r238558
gcc/cp/ChangeLog:
PR c/70339
PR c/71858
* name-lookup.c: Include gcc-rich-location.h, spellcheck-tree.h,
and parser.h.
(suggest_alternatives_for): If no candidates are found, try
lookup_name_fuzzy and report if if finds a suggestion.
(consider_binding_level): New function.
(lookup_name_fuzzy) New function.
* parser.c: Include gcc-rich-location.h.
(cp_lexer_next_token_is_decl_specifier_keyword): Move most of
logic into...
(cp_keyword_starts_decl_specifier_p): ...this new function.
(cp_parser_diagnose_invalid_type_name): When issuing
"does not name a type" errors, attempt to make a suggestion using
lookup_name_fuzzy.
* parser.h (cp_keyword_starts_decl_specifier_p): New prototype.
* search.c (lookup_field_fuzzy_info::fuzzy_lookup_field): Reject
types that are not CLASS_TYPE_P, rather than rejecting individual
tree codes.
gcc/testsuite/ChangeLog:
PR c/70339
PR c/71858
* g++.dg/spellcheck-identifiers.C: New test case, based on
gcc.dg/spellcheck-identifiers.c.
* g++.dg/spellcheck-identifiers-2.C: New test case, based on
gcc.dg/spellcheck-identifiers-2.c.
* g++.dg/spellcheck-typenames.C: New test case, based on
gcc.dg/spellcheck-typenames.c
From-SVN: r238538
With the last change the not-aligned symbol ref markers are always set
for modes with size zero. This is wrong since for larl the size of
the access does not matter. This patch removes that check entirely
from s390_encode_section_info. Modes with a size of 0 get rejected in
s390_check_symref_alignment which is used for the load/store relative
instructions to check for natural alignment.
Bootstrapped and regression tested on s390 and s390x with
--with-arch=z900 and --with-arch=z13.
gcc/ChangeLog:
2016-07-20 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* config/s390/s390.c (s390_encode_section_info): Remove mode size
check.
From-SVN: r238536
libstdc++-v3:
* libsupc++/pbase_type_info.cc (__pbase_type_info::__do_catch): Use
static objects for catching nullptr as pointer to member types.
gcc/testsuite:
* g++.dg/cpp0x/nullptr35.C: Change expected result for catching as
pointer to member function and also test catching by reference.
From-SVN: r238532
